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公开(公告)号：US20180238329A1
公开(公告)日：2018-08-23
申请号：US15553202
申请日：2016-02-12
发明人： Masayuki KASAHARA , Hideharu TANAKA
CPC分类号： F04C18/16 , F04C29/005 , F04C29/025 , F04C29/04 , F04C2210/1005 , F04C2210/206 , F04C2240/30 , F04C2240/40 , F04C2240/806 , F04C2270/24
摘要： Size reduction of a compressor and cooling of an electric motor are effectively achieved. An oilless compressor, having: a compressor main body that has a rotor for compressing air, a rotor shaft for supporting the rotor, and a bearing for rotatably supporting the rotor shaft; an electric motor for producing drive force for driving the compressor main body; at least one gear for transmitting drive force to the rotor shaft; a lubricating oil pipe for conveying lubricating oil to the bearing and/or the gear; and an oil pump for pressure-feeding the lubricating oil; wherein the electric motor has, in the external peripheral direction of an armature, a cooling jacket for channeling the lubricating oil to an internal flow channel to cool the armature of the electric motor, and the lubricating oil circulates through the cooling jacket and the lubricating oil pipe.
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公开(公告)号：US20210017988A1
公开(公告)日：2021-01-21
申请号：US17043370
申请日：2019-03-26
发明人： Masakazu HASE , Hideharu TANAKA , Akira IYOZUMI , Masahiko TAKANO , Kenji MORITA , Shigeyuki YORIKANE , Takashi NAKAJIMA , Yoshihiko SAGAWA
摘要： A technique is provided that can further reduce power at the time of “unload operation control” in a gas compressor that generates a compressed gas at a set pressure by constant-speed control. The gas compressor includes a compressor main unit, a drive source, an intake throttle valve, a gas release valve, rotation speed converting means, a pressure detecting device that detects a discharge pressure, and a controller that, the relationship between an upper-limit pressure H and a lower-limit pressure L being H>L, carries out opening the intake throttle valve and closing the gas release valve and operating the drive source at a full-load rotation speed until the discharge pressure reaches the upper-limit pressure H. The controller carries out at least one of closing the intake throttle valve and opening the gas release valve to reduce the discharge pressure to within a predetermined range when the discharge pressure reaches the upper-limit pressure H. The controller carries out switching to load operation when the discharge pressure drops to the lower-limit pressure L. In the gas compressor, the controller outputs a command of a lower rotation speed than the full-load rotation speed to the rotation speed converting means when the discharge pressure rises and reaches the upper-limit pressure H. The controller outputs a command of the full-load rotation speed to the rotation speed converting means when the discharge pressure drops and reaches the lower-limit pressure L.
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公开(公告)号：US20160356289A1
公开(公告)日：2016-12-08
申请号：US15237990
申请日：2016-08-16
发明人： Masahiko TAKANO , Hideharu TANAKA
CPC分类号： F04C29/04 , F04C18/16 , F04C2240/81 , F04C2270/195 , F05B2260/20 , F25B31/004 , F25B43/02 , Y02P80/152
摘要： An oil-cooled gas compressor provided with a compressor body, an oil separator that separates out oil from a compressed gas, a gas pipe for sending the compressed gas, from which oil has been separated out by the oil separator, to a user, and an oil pipe for returning, to the compressor, the oil separated out by the oil separator. An air-cooled heat exchanger for cooling the aforementioned oil, a controllable-speed cooling fan for blowing cooling air at said air-cooled heat exchanger, and a waste-heat-recovery heat exchanger, provided upstream of the air-cooled heat exchanger, for recovering heat from the oil flowing through the abovementioned oil pipe, are also provided. The speed of the cooling fan is controlled so as to bring the temperature of the compressed gas discharged from the compressor body to within a prescribed range. It is possible both to recover waste heat from the oil heated by being used to cool the compressor and to suppress compressor temperature fluctuations, even if the load on the waste-heat-recovery equipment varies.
摘要翻译： 一种设置有压缩机体的油冷式气体压缩机，将压缩气体分离油的油分离器，将由油分离器将油分离出的压缩气体送到使用者的气体管道，以及 用于将由油分离器分离出的油返回到压缩机的油管。 用于冷却上述油的风冷式热交换器，在风冷式热交换器上吹送冷却空气的可控速冷却风扇和设置在风冷式热交换器上游的废热回收热交换器， 用于从流过上述油管的油回收热量。 控制冷却风扇的速度使得从压缩机主体排出的压缩气体的温度达到规定范围。 即使废热回收设备的负荷变化，也可以从用于冷却压缩机的加热油中回收废热，并抑制压缩机的温度波动。
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公开(公告)号：US20190128264A1
公开(公告)日：2019-05-02
申请号：US16094136
申请日：2017-03-30
摘要： The objective of the present invention is to reduce loss factors that occur inside an oil-cooled screw compressor and to improve energy efficiency. In oil-cooled screw compressors, compression is carried out by reducing the volume of an operation chamber in which a gas to be compressed and an oil are mixed and contained, and when a predetermined rise in pressure is complete, a discharge port opens and the gas to be compressed and the oil are discharged. In the operation chamber, the reduction in volume continues and reaches zero, such that the operation chamber disappears, and the opening area of the discharge port also gradually decreases. Immediately before the operation chamber disappears, the ratio of the oil within the operation chamber is high and the opening area of the discharge port is small. Therefore, the discharge resistance increases and the internal pressure dramatically rises, and this has led to increases in the torque rotating the rotor. Thus, in the present invention, a tooth crest arc of a fixed width is provided to the tooth crest of a male tooth profile, and simultaneously a tooth bottom arc is provided to the tooth bottom of a female tooth profile. Due to the actions thereof, the operation chamber immediately before disappearing exists only in a bottom half region from a line that connects the centers of the male and female tooth profiles, and the opening area relative to the volume of the operation chamber can be increased. As a result, the discharge of oil becomes smooth and energy loss is reduced.
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公开(公告)号：US20180039719A1
公开(公告)日：2018-02-08
申请号：US15555427
申请日：2016-01-19
IPC分类号： G06F17/50
CPC分类号： G06F17/509 , G06F17/5004 , G06F2217/34
摘要： A network simulation device of the present invention: accepts an input of first plane information being positional information on a network projected onto a coordinate plane having any two dimensions out of three dimensions as coordinate axes; creates network model information which defines a coordinate value of the remaining one dimension as unknown based on the accepted first plane information; accepts selection of the element having the coordinate value defined as unknown by a user from the elements which appear in the first plane information; accepts an input of second plane information being positional information on the network projected onto a coordinate plane having any two dimensions including the remaining one dimension as coordinate axes; and determines a numerical value of the coordinate value defined as unknown of the selected element in the created network model information based on the accepted second plane information.
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公开(公告)号：US20140308148A1
公开(公告)日：2014-10-16
申请号：US14199750
申请日：2014-03-06
CPC分类号： F04C15/0092 , F01C21/08 , F04C18/16 , F04C29/021 , F04C2210/147 , F05C2253/20
摘要： In a water-supply line for performing water-supply to the rotors and the mechanical seal of a compressor, or in a condensed-water collection line for collecting condensed water of a dryer into the inlet port of the compressor, a water reservoir is provided at a position higher than the water-supply unit of the compressor. Moreover, there are provided a start-time water-supply line and a solenoid valve set up therein. Here, the start-time water-supply line establishes the connection between the lower portion of the water reservoir, and the inlet port of the compressor and the water-supply unit of the mechanical seal.
摘要翻译： 在对转子进行供水的供水管线和压缩机的机械密封，或用于收集干燥机的冷凝水的冷凝水收集管路到压缩机的入口端口中，设置储水器 在比压缩机的供水单元高的位置。 此外，设置有起动时供水管线和电磁阀。 这里，启动时间供水管线建立了储水器的下部与压缩机的入口与机械密封的供水单元之间的连接。
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